...valve and tube that comes off of egr to module. all ok. i was pulling my hair out cause this fault po401 always returned UNTIL i went to the throttle body and found the R port plugged, so i cleaned ...
... Ignition on, engine stopped. Install a hand held vacuum pump with gauge to mainfold side of EGR solenoid. Apply vacuum and observe EGR valve, the valve should not move. Valve does not move Valve ...
...operated. The actuator can refer to the vacuum diaphram located in the EGR valve. The EGR valve is located in the back center of your engine mounted to the engine, hope this helps, let me ...
...Check EGR circuit/switches. Check/replace EGR vacuum hoses. Check/replace EGR Vacuum Modulator. Remove and clean EGR valve. Test EGR valve by applying vacuum to open. If necessary,
...vacuum switching valves or solenoids. Later model vehicles may be equipped with electronically controlled EGR valves, which do not require vacuum lines or switching solenoids. Electronic EGR systems ...
...valve. The EVAP vacuum switch will open when vacuum increases to greater than 5 inches of water (in H2O) in the purge line. The PCM monitors the EVAP vacuum switch signal to determine if the ...
Question about Toyota Tacoma
...Vacuum Switching Valve (VSV) for proper operation. Check the EGR Vacuum Modulator: Ensure the EGR vacuum modulator is functioning correctly. Examine the EGR Valve: Inspect the EGR valve for any signs ...
...vacuum switching valve(VSV) for the egr valve, the modulator is attached to the egr valve, remove it and if air can pass from the bottom port through it is defective, in that case replace it and see ...
...valve is vacuum operated. there may be a vacuum line that is broken or leaking or become detached from the EGR valve. any vacuum leak will cause the engine to run lean, leading to poor starting and ...
valve can be tested with a Vacuum pump. If the diaphragm is bad, the valve will not change positions. Hence the error Code for the position sensor not opening to allow the valve to work. And the error
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